Butler County Demographics

A map of Butler County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	293,022	294,712	74.6%	75.5%
Black	32,433	34,144	8.3%	8.7%
Hispanic	27,328	25,265	7.0%	6.5%
Multiracial	20,778	17,942	5.3%	4.6%
Asian	16,962	15,658	4.3%	4.0%
Native American/Other	2,353	2,636	0.6%	0.7%

Butler County, Ohio has an estimated population of 392,876, a less than 1% change from the 390,357 recorded in the 2020 Census. The population is 74.6% White, 8.3% Black, 7.0% Hispanic, 5.3% Multiracial, 4.3% Asian, and 0.6% Native American/Other. This demographic dot map shows the population of Butler County, with one dot drawn for each person counted by the Census, color-coded by race.

Butler has become more racially diverse since the 2020 Census. It is more diverse than Ohio overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Butler County, that probability was 41.4% in 2020 and 42.7% in the most recent ACS estimates.

Butler County is ranked the 7th most populous county in Ohio, out of 88 counties. Butler County was ranked the 7th most populous county in the 2020 Census.

Butler County's White Population

293,022 residents of Butler County, or 74.6% of the population, identify as White. The share of White residents in Butler County is comparable to the share in Ohio overall, where 75.8% of the population is White. Butler County ranks 81st statewide in terms of White residents as a share of the population, out of 88 counties.

Since the 2020 Census, Butler County's White population has remained roughly the same. White residents' share of Butler County's population has decreased from 75.5% to 74.6%.

Butler County is more White than neighboring Hamilton County (62.3% White), and Montgomery County (67.7% White). Butler County is less White than neighboring Preble County (95% White), Union County (95.1% White), and Warren County (81.8% White).

Butler County's Black Population

32,433 residents of Butler County, or 8.3% of the population, identify as Black. The share of Black residents in Butler County is slightly lower than in Ohio overall, where 12% of the population is Black. Butler County ranks 12th statewide in terms of Black residents as a share of the population, out of 88 counties.

Since the 2020 Census, Butler County's Black population has declined by an estimated 5.0%. Black residents' share of Butler County's population has remained roughly unchanged at 8.3%.

Butler County is more Black than neighboring Preble County (0.7% Black), Union County (0.6% Black), and Warren County (3.2% Black). Butler County is less Black than neighboring Hamilton County (23.9% Black), and Montgomery County (20.4% Black).

Butler County's Asian Population

16,962 residents of Butler County, or 4.3% of the population, identify as Asian. The share of Asian residents in Butler County is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Butler County ranks 6th statewide in terms of Asian residents as a share of the population, out of 88 counties.

Since the 2020 Census, Butler County's Asian population has grown by an estimated 8.3%. Asian residents' share of Butler County's population has remained roughly unchanged at 4.3%.

Butler County is more Asian than neighboring Hamilton County (2.7% Asian), Preble County (0.1% Asian), Union County (0.4% Asian), and Montgomery County (2.2% Asian). Butler County is less Asian than neighboring Warren County (7.2% Asian).

Butler County's Hispanic Population

27,328 residents of Butler County, or 7.0% of the population, identify as Hispanic. The share of Hispanic residents in Butler County is slightly higher than in Ohio overall, where 4.8% of the population is Hispanic. Butler County ranks 10th statewide in terms of Hispanic residents as a share of the population, out of 88 counties.

Since the 2020 Census, Butler County's Hispanic population has grown by an estimated 8.2%. Hispanic residents' share of Butler County's population has increased from 6.5% to 7.0%.

Butler County is more Hispanic than neighboring Hamilton County (4.8% Hispanic), Preble County (1.1% Hispanic), Union County (2.5% Hispanic), Warren County (3.5% Hispanic), and Montgomery County (4.2% Hispanic).

Butler County's Native American/Other Population

2,353 residents of Butler County, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Butler County is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Butler County ranks 10th statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.

Since the 2020 Census, Butler County's Native American/Other population has declined by an estimated 10.7%. Native American/Other residents' share of Butler County's population has remained roughly unchanged at 0.6%.

Butler County is more Native American/Other than neighboring Preble County (0.3% Native American/Other), Union County (0.1% Native American/Other), and Montgomery County (0.5% Native American/Other). Butler County is less Native American/Other than neighboring Hamilton County (0.8% Native American/Other), and Warren County (0.7% Native American/Other).

Butler County's Multiracial Population

20,778 residents of Butler County, or 5.3% of the population, identify as Multiracial. The share of Multiracial residents in Butler County is comparable to the share in Ohio overall, where 4.3% of the population is Multiracial. Butler County ranks 18th statewide in terms of Multiracial residents as a share of the population, out of 88 counties.

Since the 2020 Census, Butler County's Multiracial population has grown by an estimated 15.8%. Multiracial residents' share of Butler County's population has increased from 4.6% to 5.3%.

Butler County is more Multiracial than neighboring Preble County (2.8% Multiracial), Union County (1.3% Multiracial), Warren County (3.6% Multiracial), and Montgomery County (5% Multiracial). Butler County is less Multiracial than neighboring Hamilton County (5.4% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.